Related Experiment Video
Updated: Jan 23, 2026
11:09
Relating Stomatal Conductance to Leaf Functional Traits
Published on: October 12, 2015
19.7K
Identification of drought tolerant genotypes using physiological traits in soybean
Kanchan Jumrani1, Virender Singh Bhatia1
1Division of Plant Physiology, Indian Institute of Soybean Research, Indore, India.
Summary
Identifying drought tolerance in soybean (Glycine max) is crucial. This study found that low canopy temperature, deep roots, and high chlorophyll content are key traits for selecting superior drought-tolerant soybean genotypes.
Area of Science:
- Plant breeding
- Agronomy
- Physiology
Background:
- Screening for drought tolerance in plant breeding is a significant challenge.
- Soybean (Glycine max) yield is highly susceptible to drought stress.
- Understanding physiological traits associated with drought tolerance is essential for crop improvement.
Purpose of the Study:
- To identify physiological traits for selecting drought-tolerant soybean genotypes.
- To evaluate genotypic variations in drought tolerance.
- To identify soybean genotypes exhibiting superior drought tolerance.
Main Methods:
- Field and rainout shelter experiments were conducted.
- Sixteen soybean genotypes were evaluated under irrigated and drought conditions.
- Physiological traits including canopy temperature, root length, specific leaf weight, photosynthetic rate, chlorophyll, and epicuticular wax were measured.
Main Results:
- Soybean yield reduced by 40% under drought stress compared to irrigated conditions.
- Genotypes EC 538828, JS 97-52, EC 456548, and EC 602288 showed superior drought avoidance.
- These superior genotypes exhibited low canopy temperature, deep root systems, and high photosynthetic efficiency.
Conclusions:
- Physiological traits such as canopy temperature, root characteristics, and photosynthetic efficiency can be used as selection criteria for drought tolerance in soybean breeding.
- Genetic diversity in these traits can enhance the development of drought-resilient soybean varieties.
- The identified genotypes serve as valuable resources for future breeding programs aimed at improving drought tolerance.
More Related Videos
Related Concept Videos
02:41Responses to Drought and Flooding
12.0K
Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
12.0K
02:08Trait and State Self-Esteem
11.5K
The term self-esteem is often used generically, to refer to how people feel about themselves. However, according to research, there are three distinct constructs that should not be used interchangeably (Brown & Marshall, 2006).
11.5K
01:18Polygenic Traits
69.0K
When more than one gene is responsible for a given phenotype, the trait is considered polygenic. Human height is a polygenic trait. Studies have uncovered hundreds of loci that influence height, and there are believed to be many more. Due to the high number of genes involved, as well as environmental and nutritional factors, height varies significantly within a given population. The distribution of height forms a bell-shaped curve, with relatively few individuals in the population at the...
69.0K
01:49Multiple Allele Traits
38.0K
The Concept of Multiple Allelism
38.0K
01:17Traits and States
540
Personality traits represent consistent patterns in behavior, thoughts, and emotions, reflecting an individual's tendencies across various situations. For example, extraversion, a well-known trait, manifests in individuals as talkative, energetic, and enthusiastic behaviors. These traits are stable over time, offering a reliable framework for predicting how people might act in different contexts. However, they do not define every moment of an individual's life. In contrast to traits,...
540
01:19X-linked Traits
58.3K
In most mammalian species, females have two X sex chromosomes and males have an X and Y. As a result, mutations on the X chromosome in females may be masked by the presence of a normal allele on the second X. In contrast, a mutation on the X chromosome in males more often causes observable biological defects, as there is no normal X to compensate. Trait variations arising from mutations on the X chromosome are called “X-linked”.
58.3K